Home / 19,389.20-29,076.62-6,905.91

Finding the Fourth Proportional to 19,389.20, 29,076.62 and 6,905.91

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Solution

The fourth proportional to 19,389.20, 29,076.62 and 6,905.91 is: 10,356.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,389.20 : 29,076.62 = 6,905.91 : x
  2. Step 2: Convert to fraction form
    19,389.20/29,076.62 = 6,905.91/x
  3. Step 3: Cross multiply
    19,389.20x = 29,076.62 × 6,905.91
  4. Step 4: Simplify right side
    19,389.20x = 200,800,470.62
  5. Step 5: Solve for x
    x = 200,800,470.62/19,389.20
  6. Step 6: Final answer
    x = 10,356.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.